Accessible Images

An image can be interpreted by the narrative software if you specify an additional description in the "Long Description" field. To make an image accessible fill the Alt Text field. For example, insert a pie chart image and fill the box with "Amount Spent Chart". Long Description should be set when displaying charts and graphs to provide detailed information. The value of this box should point to a separate description file. For example, create an HTML file named chartdesc.html and write more detailed information about the image: Amount Spent Chart Description. This chart shows the monthly amount spent on different products…

Figure 1: Specified Long Description field in Image Properties dialog

Here is the produced image tag:

<img src="/images/complex_chart.png" alt="Amount Spent Chart" longdesc="chartdesc.html" />    

Information on Alt Attribute https://www.w3.org/TR/WCAG20-TECHS/H37.html Information on LongDesc attribute https://www.w3.org/TR/WCAG20-TECHS/H45.html